Application for improving tolerance medicine of parasitic wasp by botanical extract

A plant-derived extract, parasitic wasp technology, applied in the direction of drug combination, plant raw materials, plant/algae/fungus/moss components, etc., to achieve the effect of improving drug resistance, improving the level of biological control of pests, and improving the effect of pest control

Active Publication Date: 2015-01-07
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic and foreign research reports on how to actively improve the tolerance of parasitoids to pesticides through effective measures are still rare.

Method used

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  • Application for improving tolerance medicine of parasitic wasp by botanical extract
  • Application for improving tolerance medicine of parasitic wasp by botanical extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Effects of 0.4g / mL Agrimony ethanol extracts on the drug resistance of B.

[0024] The effect of different extracts of Agrimony ethanol extract at 0.4g / mL on the tolerance to abamectin of P. spp. was studied (Table 1). Judging from the influence of ethyl acetate, chloroform and petroleum ether extracts of 0.4g / ml agrimony ethanol extract on the tolerance of 0.9mg / L abamectin to the hormonal wasp, after 4 days of treatment, 0.4g / The acetic acid extract of mL Agrimony ethanol extract significantly improved the survival rate of parasitoids, and the survival rate of parasitoids was 94% when treated with 0.9mg / L abamectin in combination, while the single use of 0.9mg / L abamectin The survival rate of the vermectin-treated group was only 22%. The parasitoids in the group treated with the medicine alone died 6 days after the treatment, while the survival rate of the parasitoids in the ethyl acetate extract and the compound treatment group was 50%, and there was a si...

Embodiment 2

[0027] Example 2 Effects of 0.2g / mL Agrimony ethanol extracts on the drug resistance of B.

[0028] The effect of different extracts of 0.2g / mL Agrimony ethanol extract on the tolerance to abamectin of P. agrimona was studied (Table 2). Judging from the influence of ethyl acetate, chloroform and petroleum ether extracts of 0.2g / mL Agrimony ethanol extract on the tolerance of 0.9mg / L avermectin to the hormonal wasp, within 3 days after treatment, 0.2g The survival rate of the parasitoid wasps in each treatment group of Agrimony ethanol extract per mL was not significantly different from the survival rate of the group treated with 0.9 mg / L abamectin alone. The parasitoids in the treatment group alone died 4 days after treatment, while the survival rate of the parasitoids in the ethyl acetate extract and compound treatment group was 66.7%. There was a significant difference between the two. The survival rate of the parasitoid wasps in the treatment group and the compound treatme...

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Abstract

The invention discloses a method for improving tolerance of parasitic wasp by an agrimonia pilosa ethanol extract. In order to solve the problem that the natural control function of the parasitic wasp on injurious insects is weakened due to the adverse effect of a pesticide on the parasitic wasp in the natural world, meteorus pulchricornis is processed by an ethyl acetate extract of the agrimonia pilosa ethanol extract, and thus, the tolerance of the meteorus pulchricornis on abamectin can be obviously improved. According to the technique, the parasitic wasp is taken as a target object, the drug tolerance of the meteorus pulchricornis is actively improved by the ethyl acetate extract of the agrimonia pilosa ethanol extract, and thus, the pest control effect of the meteorus pulchricornis can be improved. The technique has a significant effect on improvement of the tolerance of the parasitic wasp, is high in safety, and can be used for effectively improving the biological control level of the injurious insects after being is applied to production.

Description

1. Technical field [0001] The invention belongs to the technical field of pest biological control, and in particular relates to a method for improving the drug resistance of parasitoids by using Agrimony extract. 2. Technical background [0002] At present, the emergency prevention and control of agricultural pests mainly relies on pesticide control. While many pesticides kill pests efficiently and quickly, they also have adverse effects on the natural enemies of pests. As an important class of natural enemies of pests, parasitoids are often threatened by pesticides. There are many kinds of pesticides, among which the organophosphorus pesticides have the greatest impact on parasitoids. For example, triazophos has a direct killing effect on the rice borer egg parasitoid Trichogramma oryzae, and chlorpyrifos is also highly toxic to Plutella xylostella and Plutella xylostella. Pyrethroid pesticides also have a greater impact on parasitic wasps, such as pyrethroid pesticides a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/73A61P43/00
Inventor 郭慧芳刘宝生钟万芳牛洪涛方继朝
Owner JIANGSU ACAD OF AGRI SCI
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